Versão em Português


Libro is a cross-platform text analysis program written in Free Pascal/Lazarus which scans a whole text file (in plain text, HTML, or EPUB formats) and ranks all used words according to frequency, performing a quantitative analysis of the text using Shannon-Weaver information statistic and Zipf power law function. It counts words, chars, spaces, and syllables. Also computes readability indexes (Gunning Fog, Coleman-Liau, Automated Readability Index (ARI), SMOG grade, Flesch-Kincaid grade level and Flesch Reading Ease).



Other programs and web sites may give different numerical results for the same text than those computed by Libro. This occurs because they may use different formulae, but it is more likely that they use different rules for counting sentences or determining what is a syllable. Indeed, results for the same text may differ in Libro itself, if computed from source files in different formats (eg. plain text, HTML, EPUB). However, it is not the exact results themselves which are important, but the qualitative interpretations which may be derived from them, on a comparative basis.

Requirements (for building from the source)


Source code and binary installaton packages are available from SourceForge


This program is free software, distributed under the GNU General Public Licence version 3 (GPL3)

© 2013-2017 Mauro J. Cavalcanti, Rio de Janeiro, Brazil

Sponsored by Rizoma Editorial SourceForge

Powered by Free Pascal/Lazarus